package com.pfizer.PicView;
import android.graphics.Bitmap; 
import android.graphics.Canvas; 
import android.graphics.LinearGradient; 
import android.graphics.Matrix; 
import android.graphics.Paint; 
import android.graphics.PixelFormat; 
import android.graphics.PorterDuffXfermode; 
import android.graphics.Rect; 
import android.graphics.RectF; 
import android.graphics.Bitmap.Config; 
import android.graphics.PorterDuff.Mode; 
import android.graphics.Shader.TileMode; 
import android.graphics.drawable.Drawable; 

public class ImageUtil { 
	
	//��Drawableת��ΪBitmap 
	public static Bitmap drawableToBitmap(Drawable drawable){ 
		int width = drawable.getIntrinsicWidth(); 
		int height = drawable.getIntrinsicHeight(); 
		Bitmap bitmap = Bitmap.createBitmap(width, height, 
		drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); 
		Canvas canvas = new Canvas(bitmap); 
		drawable.setBounds(0,0,width,height); 
		drawable.draw(canvas); 
		return bitmap; 
	
	} 
	public static Bitmap DrBitmap(Bitmap bitmap)
	{
		bitmap = zoomBitmap(bitmap,78,76);
		bitmap=getRoundedCornerBitmap(bitmap,4);
		return bitmap; 
	}
	//�Ŵ���СͼƬ 
	public static Bitmap zoomBitmap(Bitmap bitmap,int w,int h)
	{ 
		int width = bitmap.getWidth(); 
		int height = bitmap.getHeight(); 
		
		if(width>height)
		{
			h=(int)(((float)height/width)*h);
		}
		else
		{
			w=(int)(((float)width/height)*w);
		}
		
		Matrix matrix = new Matrix(); 
		float scaleWidht = ((float)w / width); 
		float scaleHeight = ((float)h / height); 
		matrix.postScale(scaleWidht, scaleHeight); 
		Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, width, height, matrix, true); 
		return newbmp; 
	} 
	
	
	//���Բ��ͼƬ�ķ��� 
	public static Bitmap getRoundedCornerBitmap(Bitmap bitmap,float roundPx){ 
	
		Bitmap output = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888); 
		Canvas canvas = new Canvas(output); 
		
		final int color = 0xff424242; 
		final Paint paint = new Paint(); 
		final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight()); 
		final RectF rectF = new RectF(rect); 
		
		paint.setAntiAlias(true); 
		canvas.drawARGB(0, 0, 0, 0); 
		paint.setColor(color); 
		canvas.drawRoundRect(rectF, roundPx, roundPx, paint); 
		
		paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN)); 
		canvas.drawBitmap(bitmap, rect, rect, paint); 
		
		return output; 
	} 
	//��ô�Ӱ��ͼƬ���� 
	public static Bitmap createReflectionImageWithOrigin(Bitmap bitmap){ 
		final int reflectionGap = 4; 
		int width = bitmap.getWidth(); 
		int height = bitmap.getHeight(); 
		
		Matrix matrix = new Matrix(); 
		matrix.preScale(1, -1); 
		
		Bitmap reflectionImage = Bitmap.createBitmap(bitmap, 
		0, height/2, width, height/2, matrix, false); 
		
		Bitmap bitmapWithReflection = Bitmap.createBitmap(width, (height + height/2), Config.ARGB_8888); 
		
		Canvas canvas = new Canvas(bitmapWithReflection); 
		canvas.drawBitmap(bitmap, 0, 0, null); 
		Paint deafalutPaint = new Paint(); 
		canvas.drawRect(0, height,width,height + reflectionGap, 
		deafalutPaint); 
		
		canvas.drawBitmap(reflectionImage, 0, height + reflectionGap, null); 
		
		Paint paint = new Paint(); 
		LinearGradient shader = new LinearGradient(0, 
		bitmap.getHeight(), 0, bitmapWithReflection.getHeight() 
		+ reflectionGap, 0x70ffffff, 0x00ffffff, TileMode.CLAMP); 
		paint.setShader(shader); 
		// Set the Transfer mode to be porter duff and destination in 
		paint.setXfermode(new PorterDuffXfermode(Mode.DST_IN)); 
		// Draw a rectangle using the paint with our linear gradient 
		canvas.drawRect(0, height, width, bitmapWithReflection.getHeight() 
		+ reflectionGap, paint); 
		
		return bitmapWithReflection; 
	} 

}
